Université de Neuchâtel

Probability aggregaton methods and multiple-point statistics for 3D modeling of aquifer heterogeneity from 2D training images

Comunian, Alessandro ; Renard, Philippe (Dir.) ; Straubhaar, Julien (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2011 ; 2187.

Multiple-point statistics (MPS) is a rising method for the characterization of heterogeneity. Its strength and its Achilles' heel lie in the training image, which is the conceptual model of geological heterogeneity on which MPS simulations are based. Indeed, on one side the use of the training image allows great flexibility when for example for bi-dimensional (2D) simulation a training image can...

Université de Neuchâtel

Issues in characterizing heterogeneity and connectivity in non-multiGaussian media

Kerrou, Jaouher ; Renard, Philippe ; Hendricks Franssen, Harrie-Jan ; Lunatic, Ivan

In: Advances in Water Resources, 2008, vol. 31, no. 1, p. 147-159

The performances of kriging, stochastic simulations and sequential self-calibration inversion are assessed when characterizing a non-multiGaussian synthetic 2D braided channel aquifer. The comparison is based on a series of criteria such as the reproduction of the original reference transmissivity or head fields, but also in terms of accuracy of flow and transport (capture zone) forecasts when...